Raptor conservation today : proceedings of the IV World Conference on Birds of Prey and Owls, Berlin, Germany, 10-17 May 1992
Print Book, English, ©1994
World Working Group on Birds of Prey and Owls ; Pica Press ; Distributed in the U.S.A. by Buteo Books, London, [Near Robertsbridge, East Sussex, UK], Shipman, Va., ©1994